Fronds 2-5 m; stipes smooth. Laminae bipinnate; pinnae 65-70 cm, with 15-30 pairs of spreading pinnules; pinnules 7-20 × 0.9-3.5 cm, bases cordate, rounded to cuneate, margins crenulate to serrate, apices acuminate to caudate. Veins obvious, false veins obvious, extending nearly to costule. Sori marginal to ca. 1 mm from margin, ca. 2 mm, with 8-10 sporangia.
'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Chayamarit, K. & Balslev, H. (eds.) (2019). Flora of Thailand. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.